History of Land Surveying

The yesteryear of plot surveying is as a matter of fact interesting and march to a different drummer and it is in fact a well-known of the oldest professions in the world. In today’s start we shall regard at the antiquity of territory surveying and at which point it has influenced late land surveying.

C# and VB.net code for land area computation

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace AREA

{

    class Program

    {

        static void Main(string[] args)

        {

           double  SUMA1=0;

           double  SUMA2 = 0;

           double innorth;

           double ineast;

            int n;

            Console.WriteLine("enter number of stations");

            n = int.Parse(Console.ReadLine());

            Console.WriteLine("enter initial Northing");

            innorth = double.Parse(Console.ReadLine());

            Console.WriteLine("enter initial Easting");

            ineast = double.Parse(Console.ReadLine ());

            for (int i = 1; i <= n; i++)

            {

                if (i == n) { Console.WriteLine("enter initial Northing"); }

                else

                {

                    Console.WriteLine("enter next Northing");

                }

                double n1 = double.Parse(Console.ReadLine());

                if (i == n) { Console.WriteLine("enter initial Easting"); }

                else

                {

                    Console.WriteLine("enter next Easting");

                }

                double e1 = double.Parse(Console.ReadLine());

                double A1 = innorth * e1;

                double A2 = ineast * n1;

                SUMA1 = SUMA1 + A1;

                SUMA2 = SUMA2 + A2;

                Console.WriteLine("A1= "+A1);

                Console.WriteLine("A2= "+A2);

                innorth =n1;

                ineast = e1;

            }

            Console.WriteLine("SUM(A1)= " + SUMA1);

            Console.WriteLine("SUM(A2)= " + SUMA2);

            double areaa = (Math.Abs(SUMA1 - SUMA2)) / 2;

            Console.WriteLine("AREA = "+areaa );

            Console.ReadKey();

        }

    }

}

Area Computation Using Cross coordinate method

AREA COMPUTATION PROCEDURE USING CROSS COORDINATE METHOD

To compute area of a parcel of land with vertices coordinates given below;

A. 843834.447, 651867.023

B. 843722.016, 652165.124

C. 844062.256, 652301.287

D. 844071.258, 652185.147

E. 843895.558, 651962.478

F. 843834.698, 651867.798

Step 1

Arrange the coordinates either clock wisely or anti clock wisely and repeat the first coordinate
Step 2

Cross multiply the coordinates as shown in the table below.

 

Step 3

Find the sum of A1 and A2

A1=3321852238488.840

A2=3321855341508.320

Step 4

Calculate your area using the below formula;